lkml.org 
[lkml]   [2003]   [Feb]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: doublefault debugging (was Re: Linux v2.5.62 --- spontaneous reboots)
On Thu, Feb 20, 2003 at 12:46:51PM +0100, Ingo Molnar wrote:
> i think i managed to trigger a potentially useful oops, with BK-curr:
> Stack: c02dd6ac 0000002b 6b6b6b6b 6b6b6b6b 6b6b6b6b 6b6b6b8b 6b6b6b6b 6b6b6b6b
> 6b6b6b6b 00030001 6b6b6b6b 6b6b6b6b 6b6b6b6b 6b6b6b6b 6b6b6b6b 6b6b6b6b
> 6b6b6b6b 6b6b6b6b 6b6b6b6b 6b6b6b6b 6b6b6b6b 6b6b6b6b 6b6b6b6b 6b6b6b6b

Looks like some kind of serious use-after-free slab issue. IF is clear,
so we aren't under spin_lock_irq(&rq->lock) on the initial fault. It
might be interesting to find a way to trap it earlier. Reproducible?
If so, how?


-- wli
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:33    [W:0.169 / U:1.608 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site